From the listing posted by eBay user taddoyal (not that Tad Doyle, but someone who holds a 100% positive feedback rating and claims to be selling the van on behalf of a friend):

"Featured in many books, Cobain Unseen, Come As You Are ETC. & Many NIRVANA documentary films. This is a very unique piece of MEVINS/NIRVANA history & truly one of a kind. The KISS Mural on the side was hand drawn by Kurt Cobain using sharpie markers shoplifted from the Thriftway grocery store in Montesano Washington. (former employer of King Buzzo) This was one of the first MELVINS tour vans & was used on at least one U.S. tour. Kurt himself was often times known to drive this van to local shows, also included are two former registration's, one signed by Roger Osborne (King Buzzo) & the second signed by former MELVINS bass player Matt Lukin !"

According to a Q&A on the eBay listing, the van was last driven in 1998, and is no longer a reliably functioning vehicle. Also, "the license tabs expired April of 94, how crazy is that?"

A little more than a week remains in the auction, and the current bid stands at $11,200. "Non refundable down payment of $10,000 due within 72 hours of auction end, balance due at, or before vehicle pickup ", the seller writes.